Systems and methods for enclosing an anatomical opening, including coil-tipped aneurysm devices

Abstract

The present disclosure describes implantable therapeutic devices and methods for endovascular placement of devices at a target site, such as an opening at a neck of an aneurysm. In particular, selected embodiments of the present technology comprise a coil loop, or tip, on a portion of the implantable device. The coil tip can provide a soft and/or smooth interface with the aneurysm and can provide improved coverage of the neck of the aneurysm.

We claim:  
     
       1. An aneurysm device endovascularly deliverable to a site proximate to an aneurysm in an artery, the aneurysm device comprising:
 a closure structure comprising a distal-facing aspect configured to at least partially span the aneurysm, and a proximal-facing aspect configured to arch over lumina of the artery, 
 wherein the closure structure comprises a perimeter support including a plurality of struts and an inner support including a plurality of struts, and 
 wherein the inner support is within a boundary defined by the perimeter support; 
 a first coil tip extending from the closure structure and configured to be at least partially contained within the aneurysm; and 
 a second coil tip extending from the closure structure and configured to be at least partially contained within the aneurysm, 
 wherein the first and second coil tips extend peripherally from opposing lateral sides of the closure structure, 
 wherein a material of the first and the second coil tips is softer than a material of the closure structure, perimeter support, and inner support. 
 
     
     
       2. The aneurysm device of  claim 1  wherein the first coil tip and the second coil tip each comprise a loop shape, a basket shape, or a coil shape. 
     
     
       3. The aneurysm device of  claim 1  wherein the first and second coil tips comprise platinum. 
     
     
       4. The aneurysm device of  claim 1 , further comprising an attachment feature configured to couple the first and second coil tips to the closure structure. 
     
     
       5. The aneurysm device of  claim 4  wherein the attachment feature comprises hardened solder. 
     
     
       6. The aneurysm device of  claim 1  wherein a portion of at least one of the closure structure, the first coil tip, or the second coil tip is at least partially covered with a barrier configured to occlude at least a portion of the aneurysm. 
     
     
       7. The aneurysm device of  claim 1  wherein at least one of the first coil tip and the second coil tip comprises a permeable framework configured to allow flow to or from the aneurysm. 
     
     
       8. The aneurysm device of  claim 1 , further comprising a supplemental stabilizer proximally connected to the closure structure, wherein the supplemental stabilizer is configured to reside in the artery and press outward against a luminal wall thereof. 
     
     
       9. The aneurysm device of  claim 1  wherein the first coil tip and second coil tip each comprise a loop and together form a generally Figure-8 shape. 
     
     
       10. The aneurysm device of  claim 1  wherein at least one of the distal-facing aspect of the closure structure, the first coil tip, or the second coil tip form a complex curved surface. 
     
     
       11. An aneurysm device endovascularly deliverable to a site proximate to an aneurysm, the aneurysm device comprising:
 a closure structure having a distal-facing aspect configured to at least partially occlude the aneurysm; 
 wherein the closure structure comprises a perimeter support and an inner support, and wherein the inner support is within a boundary defined by the perimeter support; 
 a plurality of coil tips extending peripherally from the closure structure and configured to be at least partially contained in the aneurysm, 
 wherein the coil tips have a softer composition than that of the closure structure; and 
 a supplemental stabilizer connected to the closure structure, wherein the supplemental stabilizer is configured to reside in the artery and press outward against a luminal wall thereof. 
 
     
     
       12. The aneurysm device of  claim 11  wherein the coil tips each comprise a loop shape, a basket shape, or a coil shape. 
     
     
       13. The aneurysm device of  claim 11  wherein the coil tips reside in a neck portion of the aneurysm. 
     
     
       14. The aneurysm device of  claim 11  wherein the closure structure and coil tips comprise a permeable framework configured to allow flow to or from the aneurysm.